A Wolf in Sheep’s Clothing A dangerous person who is pretending to be harmless; an enemy who is disguised as a friend. This idiom is a warning that you cannot necessarily trust someone simply because they appear to be kind and friendly. 假装无害的危险人物;伪装成朋友的敌人。这个习语是一个警告，你不能仅仅因为某人看上去很友好就相信他。 从字面上看，绵羊是一种温顺可爱的动物，而狼是一种狡猾、恶毒的动物，喜欢攻击和吃掉脆弱的动物，如绵羊或羊羔(它们的幼崽)。“A Wolf in Sheep’s Clothing”这个俗语已经使用了几千年了，最早是伊索寓言写了《披着羊皮的狼》这个故事。这则寓言讲的是一只狼为了骗过牧羊人，披着羊皮，一直待在羊圈里，直到天黑，计划着最终吃掉其他的羊。 A: I met the sweetest guy just now – he promised to write me poetry and take me to Paris. 我刚刚遇到了一个最可爱的家伙，他答应给我写诗，还带我去巴黎。 B: Oh no! I heard him saying the exact same thing to another girl! Beware of him – he’s a wolf in sheep’s clothing. 噢,不!我听到他对另一个女孩说同样的话!当心他，他就是个披着羊皮的狼。